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Re: First Coil Design (fwd)



---------- Forwarded message ----------
Date: Mon, 30 Mar 1998 01:23:53 -0800
From: djQuecke <djQuecke-at-worldnet.att-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: First Coil Design (fwd)

Thanks for the feedback Mike.  When first starting my plans, it seemed the
choice was 4" or 6" and I am looking to "start small" (more or less <g>).  I
like to "pay my dues" so to speak and ground-up a new area of learning.

Picked up the dryer duct this weekend.

I figure a month or so and perhaps I'll be ready to see some sparks.

Thanks again,

-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Sunday, March 29, 1998 1:19 PM
Subject: Re: First Coil Design (fwd)


>---------- Forwarded message ----------
>Date: Sun, 29 Mar 1998 07:35:04 EST
>From: Hollmike <Hollmike-at-aol-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Re: First Coil Design (fwd)
>
>DJ,
>    I would suggest using a 1" spacing between the primary and secondary
>minimum to prevent arcing.  Others may have better advice on this point.
>    I have had good results using aluminum dryer duct and aluminun pie pans
as
>a toroid.
>    I probably wouldn't bother with a rotary gap with the power level you
are
>planning. It would be more trouble than its worth, I think.  I seem to have
>pretty good results with just two gaps-one at each end of my primary(I am
>using two neons like the ones you describe).  I guess that the RQ style gap
>would be better, but I am not going to change mine yet.
>  You will need the 10A variac when going with 2 neons.
>   It is probably not worth changing your plans, but I would have found a
5"
>pvc pipe for the secondary and used all the available wire.  This would
give
>about 690 turns and a height of about 18" for 1000 ft of wire.   I would
think
>that this would make a higher Q secondary as the inductance would be larger
>for the amount of wire.  It would also lower your frequency somewhat.  This
is
>just my preference, so don't go and change your design based on my opinion.
>  Best of luck,
>Mike Hollingsworth
>